Formulation of culture media for cultivation of heterotrophic microorganisms. BD Difco™ Bacto™ Dehydrated Culture Media Additive: Yeast Extract is supplied in dehydrated form for the convenience of the laboratorian and bioprocessing specialist.

Used in preparing microbiological culture media and in producing bacterial toxins. BD™ Bacto™ Proteose Peptone is a highly nutritious, animal-based media. The enzymatic digest of protein is high in proteoses and provides nitrogen in a form that is readily available for bacterial growth.